Telephone dial-setting apparatus



NOV. 15 192 7. 1,647,543 I G. H- REVELLE TELE HONE DIAL SETTING APPARATUS *F'ilGd July 1924 s' a i 2 26 2/ INVENTOR Geo/ye Reva/A9 Patented Nov. 1, 1927.

wires stares GEORGE H. REVEIiLE, or

i insane snA'rT n, wnsninstron.

TELEPHONE DIAL-SETTING arraanrus;

Application filed July .1,

in the dial setting devices illustrated and described in my application, Serial No. 713,Q80, filed May 13, 1924; and its object is to simplify the invention, and'generally to render the device more convenient and efiicient in operation. f

In the accompanying dr'awing,- Figure 1 is a view in side elevation showing a dial-setting device embodying my improvement applied to a telephone instrument. Fig. 2 is a view'partly in vertical section and partly in side elevation of the dial operating device, with the dial and the easing for the controlled mechanism shown in side elevation. Fig. 3 is a horizontal sectional-plan view taken on'broken line 33 of Fig. 2. Fig. i is a top plan View of the cap member of the device.

In said drawing,the reference numeral 10 represents a telephone instrument of the automatic type, so called, which is equipped with switching mechanism which is regulated through the medium of a disk, or dial, 11, mounted for rotation above a casing 12.

As best shown in Fig. 3,,the dial 11 is provided with a seriesof sight apertures 13 through which may be seen symbols such, for example, as alphabetic letters 14 and digits 15 provided upon the upper surface of the casing 12.

The above described parts are similar in construction and arrangement to known devices hitherto in use, and the operation of the same may be briefly described as fol lows:

. To make atelephonic connection or call as hIELtlQ for instance, the operator first.

' places his finger in a hole of the dial through which the letter M is seen and then rotating, the dial by his finger until the latterencounters the finger-stop which is omitted from the drawing. The operators finger isthen removed from the dial which is thereupon returned to its normal position by means of a spring (not shown) hereinafter termed the return spring, provided within the casing 12. The operator proceeds inthe same way with respect to the dial pertaining to the remaining letter E and the digits 441-9 of the desired number.

' According to the present invention there is secured to the casing,- as by means of a clamping screw 18,'a cap 20 having a top 1924. Serial No. 723,455.

wall 21 upon which is marked or printed a series of index .sy'mbols such as the letters 1& and numerals 15 (Fig. 4) for instance,

corresponding in kind but in reverse ar rangement to t vided on the casing 11.

I I 7 he symbols 14 and 15 pro-' i Located axially of the cap wall 21 isan gether constituting a crank handle. To the lower end of SIMCI arbor, interlorly of the cap 20, is an arm 28 which is arranged radially, or nearly so, from said arbor and carries at its outer end a stud 29 which extends downwardly into'one of the apertures 13 of the dial 11. The arm 28 and its stud29 constiarbor 22 for which isprovided a journal box \VhlCh may beformed integral withthe cap-K or, as shown 1n Fig.2, comprising atubular tutes what may be termed a crank arm, the

same being in continuous and gagement with thedial 11.

The index symbols 14 and 15 are 10:

cated circumferentially upon the cap 20 and with regard to the respective symbols 14 and 15 on the casing 12 so that the handle 26 must be turned clockwise-to a predetermined, indexsymbol instead of from a symbol to a; linger stop when employ ng the dial d1-v rectly as hitherto. More particularly, in placeor" the operator being required to utipo'sitive enlize his finger in a suitable aperturethat denoted, for example, bysymbol 7 (Fig. 3) and then turning the dial until the finger is arrested by encountering the stop above mentioned, the operator simply turnsthe handle 26 clockwise until it registers with the index symbol 7 (Fig. 4), and soon for the successive integers of a call.

The operator releases the handle between each setting movement to permit the dial to rotate counter clockwise to its normal position.

The invention is extremely simple in its construction, comprising few parts which are not liable to become deranged and is convenient to use.

What I claim, is, 1. In apparatus of the class described, the combination with a rotary dial,a stationary ca-p enclosing the same, an arbor'journaled in said cap, a cranksecured to said arbor below said cap and positively engaged in the dial for unitary movementtherewith in either rotary direction, a handle'secured to the arbor above said cap for efiecting rotary 'lIlOVlllGlll] to the d1al, and index characters provided on the cap for indicating the distances the handle is to'be' swung to turn the dial into predetermined rotary positions.

having a stud element continuously engagng the d al in one or theholes thereoflan ,operating handle secured to the arbor ex- "teriorly of thecap, and index characters pro vided on said cap whereby the turning of the handle is regulated for setting the dial into predetermined rotary positions.

3. In apparatus of the class described, a rotary dial, a stationary cap enclosing said dial and provided with a series of CiICUHl-- ferentially disposed index characters, and a crank continuously coupled With "the dial and turnable therewith as a' unit about its.

axis ofinotion for rotating the dial into positions detern'iined by said crank With respect to said index characters whereby the dial is setointo predetermined rotary positions. v v

Signed at Seattle, lVashington, this 25th day of June, 1924.

enonen H anyEran 

